selfpossessed

Self-possessed is an adjective describing a person who is calm, confident, and in control of their emotions, especially in challenging or stressful circumstances. A self-possessed individual projects poise, speaks evenly, and avoids impulsive reactions. The term is commonly used in journalism, literature, and biographical writing to describe demeanor or performance, such as a self-possessed speaker or athlete.

Etymology and usage: The construction combines self with possessed, tracing to early modern English. The hyphenated form self-possessed was common in 18th and 19th-century writing, while contemporary usage often prints it as a single word or with a hyphen depending on style guide.

Nuance: Being self-possessed connotes inner regulation and confidence rather than flamboyance. It is typically positive in evaluative contexts, though in some readings it could imply emotional reserve or aloofness.

Related terms: poise, composure, self-control, self-assurance, serenity.